re PR target/86348 (ICE: in curr_insn_transform, at lra-constraints.c:3919:…

re PR target/86348 (ICE: in curr_insn_transform, at lra-constraints.c:3919: unable to generate reloads for: vec_extractv4si_0_zext_sse4)

	PR target/86348
	* config/i386/sse.md (*vec_extractv4si_0_zext_sse4): Use
	alternative 0 in preferred_for_speed attribute.

testsuite/ChangeLog:

	PR target/86348
	* gcc.target/i386/pr86348.c: New test.

From-SVN: r262228

gcc/ChangeLog

+2018-06-28  Uros Bizjak  <ubizjak@gmail.com>
+
+	PR target/86348
+	* config/i386/sse.md (*vec_extractv4si_0_zext_sse4): Use
+	alternative 0 in preferred_for_speed attribute.
+
 2018-06-28  Paul Koning  <ni1d@arrl.net>
 
 	* config/pdp11/pdp11-protos.h (pdp11_shift_length): New function.

gcc/config/i386/sse.md

@@ -13715,7 +13715,7 @@
   "#"
   [(set_attr "isa" "x64,*,avx512f")
    (set (attr "preferred_for_speed")
-     (cond [(eq_attr "alternative" "1")
+     (cond [(eq_attr "alternative" "0")
 	      (symbol_ref "TARGET_INTER_UNIT_MOVES_FROM_VEC")
 	   ]
 	   (symbol_ref "true")))])

gcc/testsuite/ChangeLog

+2018-06-28  Uros Bizjak  <ubizjak@gmail.com>
+
+	PR target/86348
+	* gcc.target/i386/pr86348.c: New test.
+
 2018-06-28  Wilco Dijkstra  <wdijkstr@arm.com>
 
 	* gcc.target/aarch64/f16_mov_immediate_3.c: Fix testcase.

gcc/testsuite/gcc.target/i386/pr86348.c

+/* { dg-do compile { target { ia32 } } } */
+/* { dg-options "-O -mtune=athlon -msse4" } */
+
+int i;
+unsigned __attribute__ ((__vector_size__ (16))) v;
+
+void
+foo (void)
+{
+  v *= i;
+  i = i > -(long long) v[0];
+}